Mesomorphic compound, liquid crystal composition containing same and liquid crystal device using same
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United States of America Patent
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Mar 2, 1993
Grant Date -
N/A
app pub date -
Apr 19, 1990
filing date -
Apr 20, 1989
priority date (Note) -
Expired
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Abstract
A mesomorphic compound represented by the following formula (I): ##STR1## wherein R.sub.1 and R.sub.2 respectively denote an alkyl group having 1-16 carbon atoms capable of having a substituent; X.sub.1 and X.sub.2 respectively denote a single bond, ##STR2## and A.sub.1 and A.sub.2 respectively denote ##STR3## wherein X.sub.3 and X.sub.4 respectively denote hydrogen, fluorine, chlorine, bromine, --CH.sub.3, --CN or --CF.sub.3 ; and Z denotes --O-- or --S--.
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